RT Journal Article SR Electronic T1 Manganese Deficiency of Red Maple JF Arboriculture & Urban Forestry (AUF) FD International Society of Arboriculture SP 87 OP 88 DO 10.48044/jauf.1977.024 VO 3 IS 5 A1 Smith, Elton M. A1 Mitchell, Cynthia D. YR 1977 UL http://auf.isa-arbor.com/content/3/5/87.abstract AB